KR20090008885A - Antitheft vehicle security system and control method thereof - Google Patents

Abstract

An antitheft vehicle security system and a control method thereof are provided to connect a vehicle key and a tire monitoring system and transmit theft alarm message to a sub base station or police station when the code of the key and the tire pressure monitoring system. An antitheft vehicle security system(100) comprises a key(110) which transmits a cryptic code when a start switch of a vehicle is selected or the door lock is released, determines whether an answer code coincides with a set code when the answer code corresponding to the cryptic code is received, and transmits code match signal when the answer code coincides with the set code; a monitoring device(120) which transmits the answer code when the cryptic signal is received and transmits engine start signal when the code match signal is received; and an engine control unit(130) which controls the engine to start when the engine start signal is received.

Description

Anti-theft system of vehicle and its control method {ANTITHEFT VEHICLE SECURITY SYSTEM AND CONTROL METHOD THEREOF}

1 is a schematic view showing an arrangement of an anti-theft system for a vehicle according to the present invention.

2 is a control flowchart illustrating a process of controlling an anti-theft system of a vehicle according to the present invention.

* Description of symbols on the main parts of the drawings *

100 ... vehicle anti-theft system

110 ... vehicle key 120 ... tire pressure monitoring device

130 Engine control 140 Public server

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle antitheft system, and to a vehicle antitheft system and a control method thereof for preventing theft of a vehicle using a tire pressure monitoring system (TPMS).

In general, it is well known that the vehicle door is locked to prevent theft while the vehicle is parked, or the steering wheel is locked to prevent theft of the vehicle.

However, if only the door of the vehicle is locked and parked as described above, even if there is no ignition key, it is not unusual for anyone to steal the vehicle by simply releasing the locked door from the outside and connecting the starting wire to steal the vehicle. In the case of a vehicle with a locked steering wheel, if you have acquired the ignition key or are good at manipulating the ignition key, you can easily release the steering wheel and start the vehicle with the ignition key. There were problems such as frequent cases of being hit.

In order to solve this problem, a vehicle antitheft device using an immobilizer system is used. The immobilizer system is an advanced system of CAR LOCK SET for preventing theft of a vehicle. It is a system that starts only when the secret code is corrected by checking the computer in the vehicle.

The conventional vehicle anti-theft device using the immobilizer system is a system that prevents theft by sounding an alarm sound or siren when the electronic control unit (ECU) receives a signal from each sensor and determines that the theft is stolen. 1995-17525.

However, the conventional vehicle anti-theft device using an immobilizer system has a problem in that it cannot actively cope with theft prevention because it simply sounds audibly or visually to a driver who has a vehicle key.

Accordingly, an object of the present invention is to provide an anti-theft system for a vehicle that has been improved to prevent theft of a vehicle by actively using a tire pressure monitoring system. .

In order to achieve the above object, the present invention transmits an encryption code when the vehicle is turned on and selected or when the door lock is released (when release of the immobilizer system), and a response code corresponding to the encryption code is received. A vehicle key for transmitting a code matching signal if the two codes are the same by determining whether the code is the same as a stored code; A tire pressure monitoring device that monitors the encryption code when the encryption code is received and transmits the response code, and when the code matching signal is received, transmits an engine operation signal; And an engine control device for controlling the engine to be turned on when the engine operation signal is received.

Here, the vehicle key determines whether the response code is the same as a pre-stored code, and if two codes are not the same, transmits a code mismatch signal, and the tire pressure monitoring device receives the engine mismatch if the code mismatch signal is received. Or determine whether the door lock is released.

In addition, the tire pressure monitoring device transmits a stolen notification message to the public server when the engine is turned on or the door lock is released.

In order to achieve the above object, the present invention transmits an encryption code when the vehicle key is selected for start-up of the vehicle or when the door lock is released (when release of the immobilizer system), and the tire pressure monitoring device monitors the encryption code. A response code corresponding to an encryption code is transmitted, and the vehicle key determines whether the response code is the same as a previously stored code, and if two codes are the same, a code matching signal is transmitted to the tire pressure monitoring device. The monitoring apparatus transmits an engine operation signal to the engine control apparatus when the code matching signal is received, and controls the engine control unit to turn on the engine when the engine operation signal is received.

Here, in the vehicle key, it is determined whether the response code is the same as a previously stored code, and if the two codes are not the same, a code mismatch signal is transmitted to the tire pressure monitoring apparatus.

In addition, when the tire mismatch signal is received, the tire pressure monitoring apparatus determines whether the engine is started or whether the door lock is released. When the engine is turned on or the door lock is released, the tire pressure monitoring device notifies the public server of a theft notification message. send.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic view showing an arrangement of an anti-theft system for a vehicle according to the present invention.

As shown in FIG. 1, an anti-theft system 100 of a vehicle according to the present invention includes a vehicle key 110, a tire pressure monitoring device 120, and an engine control device 130.

The vehicle key 110 transmits an encryption code when the start-up is selected or when the door lock is released (when the immobilizer system is released). When the response code corresponding to the encryption code is received from the tire pressure monitoring device 120, the response code It is determined whether the code is identical to the previously stored code, and if the two codes are the same, a code matching signal is transmitted.

In more detail, the vehicle key 110 is equipped with a transponder having an encryption code set therein, and when starting on is selected by the user, the vehicle key 110 transmits the encryption code to the tire pressure monitoring apparatus 120.

Next, the vehicle key 110 receives the response code corresponding to the encryption code from the tire pressure monitoring device 120 to determine whether the same as the pre-stored code, if the two codes are the same and transmits a code matching signal to the next Allow the processor to proceed.

If the two codes are not the same, when the vehicle key 110 transmits a code mismatch signal to the tire pressure monitoring device 120, the tire pressure monitoring device 120 controls the engine controller 130 to control the engine. To prevent the engine from starting.

The tire pressure monitoring apparatus 120 monitors the encryption code and transmits a response code when the encryption code is received.

Prior to describing the tire pressure monitoring device 120 of the present invention, a tire pressure monitoring system (TPMS) is a sensor attached to a tire to detect pressure and temperature and store data in real time. It is a device that transmits to the front so that the driver can check the tire pressure in real time.

The anti-theft system 100 of the vehicle of the present invention employs such a tire pressure monitoring device is configured to respond strongly to theft prevention.

In addition, the tire pressure monitoring device 120 transmits an engine operation signal when a code matching signal is received from the vehicle key 110, and the engine control device 130 controls the engine to be turned on when the engine operation signal is received. do.

That is, when the tire pressure monitoring device 120 receives the code matching signal, the tire pressure monitoring device 120 transmits a command signal for turning on the engine to the engine control device 130 by putting the CAN signal in the CAN ID using CAN protocol communication to start the engine. Take it.

In addition, when the tire pressure monitoring device 120 receives a code mismatch signal, the tire pressure monitoring device 120 determines whether the engine is started or whether the door lock is released. Send it.

For example, the tire pressure monitoring device 120 determines whether the engine is started, and when the engine is started, the tire pressure monitoring device 120 determines that the vehicle has been stolen, and passes it to a public service 150 such as a neighboring base station or a police station. 1234 has been stolen. "

In addition, the tire pressure monitoring apparatus 120 further determines whether the engine is abnormal by determining whether the engine is abnormal in addition to whether the engine is started or whether the door lock is released or not. Send an engine error message or make an alarm sound. In this case, the vehicle key 110 receiving the engine abnormal message is assumed to have a predetermined screen display means.

When the engine operation signal is received, the engine control device 130 performs all series of operations for starting the engine.

Hereinafter, a control method of the anti-theft system of a vehicle will be described.

FIG. 2 is a control flowchart illustrating a process of controlling an anti-theft system of a vehicle according to the present invention. Referring to FIG. 2, the vehicle key 110 selects a start-up or releases a door lock (release of an immobilizer system). C) transmits an encryption code (200).

Next, the tire pressure monitoring apparatus 120 monitors the encryption code and transmits a response code corresponding to the encryption code to the vehicle key 110 (201).

The vehicle key 110 determines whether the response code is the same as a pre-stored code (202), and if the two codes match, transmits a code matching signal to the tire pressure monitoring device 120 (203).

The tire pressure monitoring apparatus 120 determines whether a code match signal is received (204), and when the code match signal is received, transmits an engine operation signal to the engine control apparatus 130 (205).

The engine controller 130 determines whether the engine operation signal is received (206), and when the engine operation signal is received, controls the engine to be turned on (207).

If the response code is not the same as the previously stored code in step 202, the vehicle key 110 transmits a code mismatch signal to the tire pressure monitoring device 120 (208).

The tire pressure monitoring apparatus 120 determines whether a code mismatch signal is received (209), and when a code mismatch signal is received, determines whether the engine is turned on or the door lock is released (210).

If the engine is turned on or the door lock is released, theft notification message is transmitted to the public server 150 (211).

As described above, according to the anti-theft system of the vehicle and the control method thereof, it is possible to actively prevent theft of the vehicle by authenticating the encryption code through the communication connection between the vehicle key and the tire pressure monitoring device. have.

In addition, there is an advantage to prevent theft of the vehicle and to prevent crime of the vehicle by notifying the fact that the vehicle is stolen to the neighboring base station or police station.

Claims (6)

When the vehicle is selected for start-up or when the door lock is released, an encryption code is transmitted, and when a response code corresponding to the encryption code is received, it is determined whether the response code is the same as a previously stored code. A vehicle key for transmitting a signal; A tire pressure monitoring device that monitors the encryption code when the encryption code is received and transmits the response code, and when the code matching signal is received, transmits an engine operation signal; Anti-theft system of a vehicle comprising an engine control unit for controlling the engine to be turned on when the engine operation signal is received. The method of claim 1, wherein the vehicle key, If the two codes are not the same by determining whether the response code is the same as the previously stored code, and transmits a code mismatch signal, The tire pressure monitoring device determines whether the engine starts or releases the door lock when the code mismatch signal is received. According to claim 2, The tire pressure monitoring device, When the engine is turned on or the door lock is released, the vehicle anti-theft system for transmitting a theft notification message to the public server. In the vehicle key, the encryption code is transmitted when the vehicle is turned on. The tire pressure monitoring device monitors the passcode and transmits a response code corresponding to the passcode. The vehicle key determines whether the response code is the same as a previously stored code, and if two codes are the same, transmits a code matching signal to the tire pressure monitoring device. The tire pressure monitoring device transmits an engine operation signal to an engine control device when the code match signal is received. And a control method of a vehicle anti-theft system for controlling the engine to be turned on when the engine operation signal is received. The method of claim 4, wherein And determining that the response code is the same as a previously stored code in the vehicle key, and if the two codes are not the same, transmitting a code mismatch signal to the tire pressure monitoring device. The method of claim 5, The tire pressure monitoring apparatus, upon receiving the code mismatch signal, determines whether the engine is started or whether the door lock is released. When the engine is turned on or the door lock is released, the tire pressure monitoring device transmits a theft notification message to the public server. Control method of vehicle anti-theft system.

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